Boost gauge

[Jdam15]

I am new to this and I need help with my 91 eclipse turbo fwd, I have bought it and both boost gauges are reading different, the aftermarket one is reading 3 to 4 and my stock one is reading over 10 what is the deal.

 

[pauleyman]

Stock gauge is a calculation. Aftermarket is a direct pressure tap. 4 lbs is lower than stock. My guess, at a minimum, is you have a leak on the line to the gauge, especially if youre using the crappy the nylon tubing most of them have.

 

[Jdam15]

Yeah I have the line and its on the p labled on the throttle body on top. Ive never seen it there is that right?

 

[pauleyman]

No, in my opinion it isnt. Take a direct line from the intake. Ive used the fpr line for the last 20 years.

 

[Jdam15]

What is the fpr line. I really new to this im sorry.

 

[Turbony95]

It's the line that runs from the intake manifold to the fuel pressure regulator (FPR)

Splice the line and install a plastic T and run that line to the boost gauge and make sure you zip all your connections, don't want that line to come off while your driving

 

[pauleyman]

Fuel pressure regulator on the end of the fuel rail. Splice on the manifold side. That line runs from regulator to solenoid to manifold. Splice between the solenoid and the manifold. Get rid of any nylon line and run vacuum hose to a hose barb on the gauge.

 

[Jdam15]

Ok well ill do that. So another question I have. I bought this car and alots been done. So I have an aftermarket bov and I should be able to vent to atmosphere but I try and it dies on me everytime I let off the gas. And I have a 20g turbo on this car so im told. I want to learn as much as I can about this car. Please help

 

[Turbony95]

If you still have the stock mass airflow sensor, you should not be venting to atmosphere. What's happening is the maf is metering the air that's coming in and everytime you let off, all that air that has been accounted for is gone, leading your car to run rich, stumble and stall

 

[Jdam15]

What can I do to vent to the atmosphere, ot what do I need?

 

[Turbony95]

You would need either a MAF-T or to switch to speed density. Honestly, I would say spend that money on maintenance first, ie. Timing belt, oil change, fuel filter, spark plugs, wires etc. just make sure the car is running right and it's 100% Before you get into modding

 

[Jdam15]

I have done all that basic maintenance. I even removed the oil pan and replaced gaskets.

Car run and sounds great. Just want to do little things right now and make alittle more boost.

 

[99OZDSM]

As mentioned, please re-circulate your bpv.

 

[2gmitsueclipse]

Venting the BOV to atmosphere will net you about zero horsepower. Why would you not want to vent-to-atmosphere would be the next question. This topic is best covered in the following thread as it would be wasteful to type it out:
http://www.dsmtuners.com/threads/venting-your-bov-to-the-atmosphere.113858/

Here is a good starting point for power:
http://www.dsmtuners.com/threads/1g-dsm-upgrade-paths.486218/

 

[pauleyman]

Make a new thread. I can think of no positive reason to do this.

 

[Jdam15]

No I read it and its a logical thing not to vent, I wasnt doing it for hp. I was just told that when I bought the car he tried to and I was asking the question on it. Thank you for all you guys help so far im sure ill need more help. And I have been reading on here. Its alot to learn. But its cool.

 

[arch18]

Where can you get new vacuum lines to replace all the old ones?

 

[Jdam15]

Any auto parts store really.

 

[arch18]

Any auto parts store really.

I wasn't sure if they were specific. Thanks!

 

[Jdam15]

No problem